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Answers by Rahul Jain25
User Rahul Jain25
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User Rahul Jain25
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+1
vote
1
Geometry_apptitude
I tried solving it by enumerating all the paths and got ans 12.Can anyone provide some formula for this ?
answered
Apr 13
in
Numerical Ability

49
views
#apptitude
+1
vote
2
Rosen (proposition logic)
The nth statement in a list of 100 statements is “Exactly n of the statements in this list are false.” a) What conclusions can you draw from these statements? b) Answer part (a) if the nth statement is “At least n of the statements in this list are false.” c) Answer part (b) assuming that the list contains 99 statements.
answered
Mar 25
in
Mathematical Logic

58
views
0
votes
3
Arun SharmaTime Speed Distance
answered
Mar 19
in
Verbal Ability

83
views
aptitude
speedtime
+3
votes
4
Bridges
Which of the following are not true? I. Only gateway can be used to connect different protocol networks II. Gateway occur at all layers. III. Bridge and switch some times occur in network layer also IV. Repeater occur at both physical layer and data link layer. A)Only I and IV B)Only II, III and IV C)Only III and IV D)Only I, II and III
answered
Mar 19
in
Computer Networks

110
views
+2
votes
5
C language
#include <stdio.h> #define R 10 #define C 20 int main() { int (p)[R][C]; printf("%d", sizeof(p)); printf("\n%d",sizeof(*p)); printf("\n%d",sizeof(**p)); getchar(); return 0; } i m thinking output is 4, 800, 4 ?? any body explain it??
answered
Mar 16
in
Programming

59
views
0
votes
6
doubt
shouldn't be answer "4" short term scheduler?
answered
Mar 16
in
Operating System

63
views
operatingsystem
+1
vote
7
doubt
By using RSA algo find the values of decryption key(D) when n=77,encryption key(E)=7 A)50 B)37 C)43 D)56
answered
Mar 16
in
Computer Networks

39
views
computernetworks
+4
votes
8
probability
There are $N$ persons sitting in a row. Two of them are selected at random.The probability that two selected persons are not together ?
answered
Mar 16
in
Probability

66
views
discretemathematics
probability
+1
vote
9
probability
There are four machines and it is known that exactly two of them are faulty .They are tested one by one in a random order till both the faulty machines are identified ,then the probability that only two tests are needed ?
answered
Mar 16
in
Probability

80
views
discretemathematics
probability
0
votes
10
ISRO 2014 Complex Numbers [EE]
answered
Mar 11
in
Linear Algebra

37
views
isro
isroee
engineeringmathematics
+1
vote
11
ISRO 2015 Differential equation [EE]
answered
Mar 10
in
Calculus

57
views
isro
isroee
engineeringmathematics
0
votes
12
ISRO 2014 Quadratic Equation [EE]
answered
Mar 10
in
Linear Algebra

27
views
isro
isroee
engineeringmathematics
+1
vote
13
ISRO 2014 probability [EE]
80. A student is to answer 10 out of 13 questions in an examination such that he must choose at least 4 from the first five questions. The number of choices available to him is (A) 140 (B) 196 (C) 280 (D) 346
answered
Mar 10
in
Probability

65
views
isro
isroee
engineeringmathematics
probability
0
votes
14
ISRO 2015 Truth table [EE]
The truth table X Y F 0 0 0 0 1 0 1 0 1 1 1 1 Represent the Boolean function (a) X (b) X  Y (c) X +Y (d) Y
answered
Mar 10
in
Digital Logic

67
views
isro
isroee
0
votes
15
ISRO 2015 Ripple Counter [EE]
A 4 bit module 16 ripple counter uses JK F/F. If the propagation delay of each F/F is 50 nano seconds, the maximum clock frequency that can be used is equal to (a) 20 MHz (b) 5 MHz (c) 10 MHz (d) 4 MHz
answered
Mar 10
in
Digital Logic

87
views
isro
isroee
digitallogic
+1
vote
16
ISRO 2015  Johnson counter [EE]
answered
Mar 10
in
Digital Logic

69
views
isro
digitallogic
isroee
0
votes
17
ISRO 2015 Conic sections [Mech]
answered
Mar 7
in
Linear Algebra

25
views
engineeringmathematics
isro
isromech
0
votes
18
ISRO 2014 vector {mech}
Angle made between vector C = 2i 3j+ 4k and the Zaxis is a) 4 /√29 b) sin  1 4 /√29 c) cos 1 4 /√29 d) tan 1 4 /√29
answered
Mar 7
in
Linear Algebra

22
views
engineeringmathematics
isro
isromech
0
votes
19
ISRO 2012 Mech Engineering mathematics Cross product
answered
Mar 7
in
Linear Algebra

28
views
isro
isromech
engineeringmathematics
+1
vote
20
ISRO 2012: MEch Probability
Let E and F be any two events with P(E U F)= 0.8, P(E) = 0.4 and P (E/ F) = 0.3. Then P (F) is (a) 3/7 (b) 4/7 (c) 3/5 (d) 2/5
answered
Mar 7
in
Probability

49
views
engineeringmathematics
isro
isromech
0
votes
21
ISRO 2009ECE Engineering Mathematics
answered
Mar 5
in
Linear Algebra

42
views
isro
isroece
engineeringmathematics
+1
vote
22
ISRO 2008 ECE Odd parity
Odd parity generator uses _____ logic (a) XNOR (b) XOR (c) Sequential (d) OR
answered
Mar 5
in
Digital Logic

58
views
isro
isroece
digitallogic
0
votes
23
ISRO 2008ECE Moore model for squntial circuits
answered
Mar 5
in
Digital Logic

35
views
isro
isroece
digitallogic
0
votes
24
ISRO 2008 ECE Dynamic hazard
In asynchronous circuits, which of the following best explains a dynamic hazard (a) Output changes several times for a single change in an input (b) Output changes to a different state for a single change in an input (c) Output changes momentarily when it is supposed to remain constant for a single change in an input (d) None of the above
answered
Mar 5
in
Digital Logic

46
views
isro
isroece
digitallogic
+1
vote
25
If y is of integer type then the below expressions 3*(y8) / 9 and (y8) / 9*3
answered
Mar 5
in
Programming

35
views
0
votes
26
ISRO2013ECE Digital Logic
What is the frequency and duty cycle of output Y, when CLK frequency is 1MHz @ 50% duty cyle? a) 500 KHz @ 50% duty cycle b) 500 KHz @ 25% duty cycle c) 250 KHz @ 50% duty cycle d) 250 KHz @ 25% duty cycle
answered
Mar 5
in
Digital Logic

86
views
isro2013ece
isro
digitallogic
0
votes
27
ISRO2013ECE: Digotal Logic
Which of the following is the Boolean function for majority voting, assuming A, B, C are inputs and Y is output? a) Y=AB+AC+BC b) Y=A+B+C c) Y= ABC d) Y= AB+BC
answered
Mar 5
in
Digital Logic

37
views
isro
isro2013ece
digitallogic
0
votes
28
ISRO2013ECE Digital Logic
If a counter having 10 flip flops is initially at 0, what count will it hold after 2060 pulses? a) 000 000 1100 b) 000 001 1100 c) 000 001 1000 d) 000 000 1110
answered
Mar 5
in
Digital Logic

72
views
digitallogic
isro
isro2013ece
0
votes
29
ISRO2013ECE Digital Logic
What is the division factor of the given clock divider circuit? a) 2 b) 3 c) 1.5 d) 2.5
answered
Mar 4
in
Digital Logic

56
views
isro2013ece
isro
digitallogic
+1
vote
30
ISRO 2007 ECE Vectors
A unit vector perpendicular to the vectors a= 2i –3j + k and b=i+j2k , is a) (1/ √ 3 ) (–i+j+k) b) (1/ √ 3 )(i+j k) c) (1/ √ 3 )(i + j+k) d) (i+j+k)
answered
Mar 4
in
Linear Algebra

49
views
isro
isroece
engineeringmathematics
+2
votes
31
combinational circuit
Let combinational function $f(\text{a, b, c, d}) = \text{abc}'+\text{ab}'\text{cd}'$ (where $x'$ means complement of $x$). If all inputs are equally probable, then the probability that the function evaluates to True is: (A) 5/16 (B) 1/4 (C) 3/16 (D) 1/8
answered
Mar 4
in
Digital Logic

84
views
digitallogic
probability
+2
votes
32
ISRO 2006ECE Ripple counter
A Pulse train with a frequency of 1MHz is counted using a modulo 1024 ripplecounter built with JK flipflops. For proper operation of the counter the maximum permissible propagation delay per flipflop stage is a) 100 n sec b) 50 n sec c) 20 n sec d) 10 n sec
answered
Mar 3
in
Digital Logic

46
views
isro
isroece
digitallogic
+2
votes
33
ISRO 2007ECE : Binary Codes
The logic circuit given below converts a binary code Y1 Y2 Y3 into a) Excess 3 code b) Gray code c) BCD code d) Hamming code
answered
Mar 3
in
Digital Logic

31
views
isro
isroece
0
votes
34
ISRO 2007ECE Up counter
A 4bit presetable UP counter has preset input 0101. The preset operation takes place as soon as the counter reaches 1111. The modulus of the counter is a) 5 b) 10 c) 11 d) 15
answered
Mar 3
in
Digital Logic

49
views
isro
isroece
digitallogic
+2
votes
35
ISRO 2007ECE Counters
A 4bit synchronous counter uses flipflops with propagation delay time of 25 ns each. The maximum possible time required for change of state will be a) 25 ns b) 50 ns c) 75 ns d) 100 ns
answered
Mar 3
in
Digital Logic

53
views
isro
isroece
digitallogic
+3
votes
36
ISRO 2007ECE Roots of equation
answered
Mar 3
in
Linear Algebra

72
views
isro
isroece
0
votes
37
ISRO 2007 ECE Probability
A bag contains eight white and six red marbles. The probability of drawing two marbles of same colour is a) 8c2 .6c2 / 14c2 b) 8c2 /14c2 + 6c2 /14c2 c) 8c2.6c2 /14c2.14c2 d)8c2 /14c2 + 6c2 /12c2
answered
Mar 3
in
Probability

64
views
isro
isroece
0
votes
38
ISRO 2007 ECE Matrices
The Algebraic multiplicity of the matrix A= is a) 1 b) 2 c) 3 d) 4
answered
Mar 3
in
Linear Algebra

53
views
isro
isroece
engineeringmathematics
+3
votes
39
ISRO 2007 ECE Determinant
The value of determinant is: a) 0 b) 1 c) 3 d) a+b+c
answered
Mar 3
in
Linear Algebra

35
views
isro
isroece
engineeringmathematics
+2
votes
40
ISRO 2007 ECE Half Adder using NAND
answered
Mar 3
in
Digital Logic

49
views
isro
isroece
digitallogic
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